<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>九九乘法表</title>
    <style>
        td{
            border: 1px solid;
        }
    </style>
    <script>
        //边框，居中
        document.write("<table align='center'>")
        for (var i=1;i<=9;i++){
            document.write("<tr>")
            for(var j=1;j<i;j++){
                document.write("<td>"+i+"*"+j+"="+(i*j)+"&nbsp;&nbsp;&nbsp;"+"</td>")
            }
            document.write("</tr>")
        }
        document.write("</table>");
    </script>
</head>
<body>

</body>
</html>